| original |
Late Eocene |
|
Nigeria |
Jan du ChЄne,R.E. et al. Some new Eocene pollen of the Ogwashi-Asaba Formation, southeastern Nigeria. |
1978 |
| details |
Paleocene |
|
Nigeria |
Mebradu,S. The age of the Ugbogui/Ofumwegbe Shales: preliminary report. |
1983 |
| details |
Late Campanian |
|
Egypt |
Schrank,E. Palaeozoic and Mesozoic palynomorphs from northeast Africa (Egypt and Sudan) with special reference to Late Cretaceous pollen and dinoflagellates. |
1987 |
| details |
Late Campanian |
Early Maastrichtian |
Nigeria |
Edet,J.J. Palynostratigraphy of Late Cretaceous (Late Campanian-Early Maestrichtian) sections in the Anambra Basin, Nigeria. |
1992 |
| details |
Middle Maastrichtian |
Late Maastrichtian |
Nigeria |
Edet,J.J. et al. Palynostratigraphy of Nkporo Shale exposures (Late Campanian - Maastrichtian) on the Calabar Flank, southeast Nigeria. |
1994 |
| details |
Early Maestrichtian |
|
Nigeria |
Kumaran,K.P.N. et al. A reappraisal of Salviniaceous fossils and its implication on the age and depositional environment of Nkporo Shale of Calabar Flank, Nigeria |
1994 |